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Vertical subsea tree assembly control

A subsea tree and subsea control module technology, which is applied in earthwork drilling, wellbore/well components, sealing/isolation, etc., to achieve the effect of reducing installation time, risk, and operating expenses

Inactive Publication Date: 2013-07-03
VETCO GRAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These and other problems are generally solved or circumvented, and technical advantages are generally achieved, by preferred embodiments of the present invention providing a method for subsea well control via a vertical subsea tree

Method used

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  • Vertical subsea tree assembly control
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  • Vertical subsea tree assembly control

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Embodiment Construction

[0032] The present invention will now be described more fully hereinafter with reference to the accompanying drawings that illustrate embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the illustrated embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like symbols refer to like elements throughout, and primed notations, if used, indicate similar elements in alternative embodiments.

[0033] In the following discussion, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without such specific details. Furthermore, for the most part, details pertaining to drilling of wellbore, completion of wellbo...

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Abstract

The invention relates to a vertical subsea tree assembly control. A vertical subsea tree (21) is operated by a subsea control module (47) supplied with hydraulic and electric power from the surface via umbilical 45. Landing sub (27) connects to and is run into the vertical subsea tree (21) through riser (23). The landing sub (27) engages mating penetrations (41) on an upper portion of the master valve block (33) of the vertical subsea tree (21) to supply flow passages (37) extending from the penetrations (41) and through the master valve block (33)to the subsea control module (47) on the exterior of the tree. The subsea control module (47) is then operated through the landing sub umbilical (45) to control operation of the vertical subsea tree (21).

Description

technical field [0001] The present invention relates generally to the control of subsea well completions, and in particular to systems and methods for subsea well control by placing a landing sub on a vertical subsea tree. Background technique [0002] Subsea wellhead assemblies are commonly used to produce hydrocarbons extracted from subterranean formations beneath the ocean floor. A subsea wellhead assembly generally includes a wellhead housing disposed at an opening in a wellbore, wherein the wellbore extends through one or more hydrocarbon producing formations. Casing and tubing hangers are positioned within the casing to support casing and production tubing inserted into the wellbore. The casing lines (or acts as a lining for) the wellbore, thereby isolating the wellbore from the surrounding rock formation. The tubing is typically located concentrically within the casing and provides a conduit for the production of hydrocarbons attached within the formation. The well...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/035E21B34/04
CPCE21B33/0355E21B34/04E21B33/0385
Inventor W.T.布里森M.文翰P.怀特
Owner VETCO GRAY
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